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Finding the Fourth Proportional to 84,062.98, 126,009.41 and 54,499.60

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Solution

The fourth proportional to 84,062.98, 126,009.41 and 54,499.60 is: 81,694.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,062.98 : 126,009.41 = 54,499.60 : x
  2. Step 2: Convert to fraction form
    84,062.98/126,009.41 = 54,499.60/x
  3. Step 3: Cross multiply
    84,062.98x = 126,009.41 × 54,499.60
  4. Step 4: Simplify right side
    84,062.98x = 6,867,462,441.24
  5. Step 5: Solve for x
    x = 6,867,462,441.24/84,062.98
  6. Step 6: Final answer
    x = 81,694.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.